EN10025-3 S355N is a normalized rolled structural steel plate grade that is widely recognized for its excellent mechanical properties and versatility in various engineering applications. This grade is compliant with the European standard EN10025-3, which specifies the technical delivery conditions for structural steels with improved atmospheric corrosion resistance. In this article, we will delve into the chemical composition, mechanical properties, heat treatment conditions, low-temperature impact testing, available dimensions, primary applications, and case studies from TJC Steel Group.

Chemical Composition:

The chemical composition of EN10025-3 S355N is carefully controlled to ensure the material's strength, toughness, and weldability. The typical chemical composition is as follows:

· Carbon (C): ≤ 0.20%

· Silicon (Si): ≤ 0.55%

· Manganese (Mn): ≤ 1.60%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.020%

· Aluminum (Al): ≥ 0.020%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.11%

· Nitrogen (N): ≤ 0.015%

Mechanical Properties:

The mechanical properties of S355N are characterized by its high strength and good ductility, which make it suitable for a wide range of structural applications. The key mechanical properties include:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 470 - 630 MPa

· Elongation: ≥ 22%

· Impact Energy (Longitudinal): ≥ 27 Joules at -20°C

Heat Treatment Conditions:

S355N steel plates are supplied in the normalized condition. Normalizing is a heat treatment process that improves the mechanical properties of the steel by refining the grain structure and ensuring uniformity of hardness throughout the plate. This process involves heating the steel to a temperature above its upper critical point and then cooling it in air.

Low-Temperature Impact Testing:

S355N steel plates are subjected to low-temperature impact testing to ensure their suitability for use in environments where low temperatures may be encountered. The material must demonstrate adequate impact resistance at the specified test temperature, which is typically -20°C.

Available Dimensions:

TJC Steel Group offers EN10025-3 S355N steel plates in a wide range of sizes to meet the diverse needs of its customers. The available dimensions include:

· Thickness: 6mm - 300mm

· Width: 1500mm - 4020mm

· Length: 3000mm - 27000mm

Primary Applications:

The excellent mechanical properties and versatility of S355N make it suitable for a variety of applications, including:

· Bridges

· Buildings

· Cranes

· Offshore structures

· Power plants

· Renewable energy structures

· Shipbuilding

· Heavy machinery

TJC Steel Group Supply Case Studies:

TJC Steel Group has a proven track record of supplying high-quality S355N steel plates to various industries. One notable case study involves the supply of S355N plates for a major bridge construction project. The plates were utilized in the construction of the bridge's load-bearing structures, where their high strength and excellent toughness were crucial for ensuring the bridge's durability and safety.

Another case study highlights TJC's supply of S355N steel plates for a renewable energy project, where the material was used in the construction of wind turbine towers. The plates' ability to withstand harsh weather conditions and provide long-term structural integrity was essential for this application.

Conclusion:

EN10025-3 S355N normalized rolled structural steel plate is a versatile material that offers a combination of high strength and good toughness. With its well-defined chemical composition and mechanical properties, along with its suitability for low-temperature applications, S355N is a preferred choice for critical structural applications. TJC Steel Group's commitment to quality and customer satisfaction is evident in its successful supply of S355N steel plates for various demanding projects, showcasing its expertise in the steel industry.